/*
 * Copyright (C) 2010-2018 Gordon Fraser, Andrea Arcuri and EvoSuite
 * contributors
 *
 * This file is part of EvoSuite.
 *
 * EvoSuite is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3.0 of the License, or
 * (at your option) any later version.
 *
 * EvoSuite is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with EvoSuite. If not, see <http://www.gnu.org/licenses/>.
 */

package org.evosuite.assertion;

import org.evosuite.Properties;
import org.evosuite.testcase.TestCase;
import org.evosuite.testcase.execution.ExecutionResult;
import org.evosuite.testcase.statements.MethodStatement;
import org.evosuite.testcase.statements.Statement;


/**
 * <p>UnitAssertionGenerator class.</p>
 *
 * @author Gordon Fraser
 */
public class UnitAssertionGenerator extends AssertionGenerator {

    private boolean isRelevant(Statement s, TestCase t) {
        // Always allow assertions on the last statement
        if (s.getPosition() == (t.size() - 1))
            return true;

        // Allow assertions after method calls on the UUT
        if (s instanceof MethodStatement) {
            MethodStatement ms = (MethodStatement) s;
            String declaringClass = ms.getMethod().getDeclaringClass().getName();
            while (declaringClass.contains("$"))
                declaringClass = declaringClass.substring(0, declaringClass.indexOf("$"));

            return declaringClass.equals(Properties.TARGET_CLASS) || (!Properties.TARGET_CLASS_PREFIX.isEmpty() && declaringClass.startsWith(Properties.TARGET_CLASS_PREFIX));
        }
        return false;
    }

    /* (non-Javadoc)
     * @see org.evosuite.assertion.AssertionGenerator#addAssertions(org.evosuite.testcase.TestCase)
     */

    /**
     * {@inheritDoc}
     */
    @Override
    public void addAssertions(TestCase test) {
        ExecutionResult result = runTest(test);
        for (OutputTrace<?> trace : result.getTraces()) {
            trace.getAllAssertions(test);
        }

        for (int i = 0; i < test.size(); i++) {
            Statement s = test.getStatement(i);
            if (!isRelevant(s, test))
                s.removeAssertions();
        }
    }

}
